High Power Laser and Particle Beams, Volume. 36, Issue 12, 126001(2024)
Calibration of 6Li atomic number of lithium glass detector
Figures & Tables(10)
Fig. 2. Schematic diagram of the measurement layout for calibrating the number of 6Li
Fig. 7. Pulse height spectra for the 6Li and 7Li glasses under 32.36 meV neutron irradiation in the M5 channel of the reactor
Fig. 8. Source neutron spectrum and corresponding 6Li (n,α) T reaction cross section
Table 1. Influence of different scatterers on the experiment
View tableView in ArticleTable 1. Influence of different scatterers on the experiment
No. scatterer 6Li (n,α) T reaction rate 197Au(n,γ) 198Au reaction rate 1 without scatter 5.36×10−23 9.85×10−24 2 cadmium sleeve 5.36×10−23 9.85×10−24 3 cadmium sleeve\sample holder 5.36×10−23 9.85×10−24 4 cadmium sleeve\sample holder\air 4.99×10−23 9.50×10−24 5 cadmium sleeve\sample holder\air\neutron absorbing cavity 4.99×10−23 9.50×10−24 6 cadmium sleeve\sample holder\air\neutron absorbing cavity\3D adjustable platform base 4.99×10−23 9.50×10−24 7 ratio between reaction rates without and with scatterers 93.10% 93.12%
Table 2. List of uncertainty items
View tableView in ArticleTable 2. List of uncertainty items
No. item of uncertainty coefficient relative uncertainty/% 1 tritium production reaction rate nt 1.18 0.41 2 the activation reaction rate nnγ 1.18 1.68 3 counting rate of the beam monitor Nm1 1.18 1.00 4 counting rate of the beam monitor Nm2 1.18 0.02 5 microscopic cross-section of 197Au(n,γ) 198Au σnγ 1.18 0.14 6 microscopic cross-section of 6Li(n, T)4He σT 1.00 0.51 7 number of Au atom N197 1.18 0.24 8 detector cross-sectional area S 0.18 1.00 9 neutron beam profile density uniformity k 1.18 0.80
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Li An, Jun Xiao, Xinhua Wang, Lei Xie, Li Jiang, Jiecheng Yang, Haiping Guo, Zijie Han. Calibration of 6Li atomic number of lithium glass detector[J]. High Power Laser and Particle Beams, 2024, 36(12): 126001
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Received: Sep. 11, 2024
Accepted: Nov. 26, 2024
Published Online: Jan. 15, 2025
The Author Email: Xiao Jun (412459251@qq.com)
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